The taste, brewing method and concentration are different.

1. Taste: The taste of 15 times espresso liquid is richer, and the bitterness and sourness are more obvious, while the taste of 8 times espresso liquid is relatively light, and the bitterness and sourness are relatively weak.

2. Brewing method: 15 times espresso liquid is usually brewed using high-pressure water through compressed coffee powder, while 8 times espresso liquid can be brewed using conventional drip filtering or soaking methods. .

3. Coffee concentration: 15 times the concentration of espresso liquid is higher, and the caffeine content in each cup is also higher, while the concentration of 8 times espresso liquid is relatively low, and the caffeine content in each cup is higher. Also lower.